Added readme structure

Author: prasanna1211

README.md

@@ -0,0 +1,7 @@
+# How to include in playground
+
+Once the component is added in the ```src``` folder,
+
+1. Add default code in ```client/common/DefaultCode```
+2. Import it in the ```index.js``` file of ```DefaultCode folder```
+3. Import these components in the ```common/componentList.js```

src/card/index.js

@@ -2,7 +2,7 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import { themr } from 'react-css-themr';
 import classnames from 'classnames';
-import defaultTheme from './defaultTheme.scss';
+import defaultTheme from './theme.scss';
 
 const Card = ({
   children,